Keg mug



FIG. 1 is a perspective view of a keg mug showing my new design.

FIG. 2 is a front elevational view.

FIG. 3 is a back elevational view.

FIG. 4 is a left side view.

FIG. 5 is a right side view.

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom view.

The broken lines form no part of the claim. 

The ornamental design for a keg mug, as shown and described. 